Caicó weather in October

In October, Caicó sees average daytime highs of 36°C and overnight lows near 23°C, with 4 mm of rain across 0.3 wet days and about 12.1 hours of daylight. It is the 3rd-warmest and 10th-wettest month of the year here.

Day-to-day highs hold fairly steady near 36°C through the month. The sky is clear or mostly clear about 65% of the time in October, and the air most often feels humid.

Daylight stretches from about 12 h 06 min at the start of October to 12 h 12 min by month's end. Set against the rest of the year, October is Caicó's 2nd-clearest and 3rd-windiest month. For the whole year in context, see Caicó's year-round climate.

Daytime high
36°
3rd warmest
Overnight low
23°
5th coldest
Rainfall
4 mm
0.3 wet days
Daylight
12 h 06 min
5:09 AM – 5:18 PM
Cloud cover
34%
2nd clearest
Wind
18 km/h
3rd windiest
Solar energy
7.09 kWh/m²
Travel score
2.7
out of 10

Caicó is human settlement in Brazil.

Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.

Temperature in October

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 36°C through the month.

A typical October day in Caicó reaches about 36°C in the afternoon and slips back to 23°C overnight — a 13°C spread between the day's warmth and the night's chill. On most days the high lands between 35°C and 37°C. Set against its neighbours, October runs about 1°C warmer than September and on par with November.

20°25°30°35°40°151015202531
Avg high (°C)Avg low (°C)
13622
23622
33622
43622
53622
63622
73622
83622
93622
103622
113623
123623
133623
143623
153623
163623
173623
183623
193623
203623
213623
223623
233623
243623
253623
263623
273623
283623
293623
303623
313623

How October really feels in Caicó

Once humidity and wind are folded in, October averages 31 days that feel above 32°C and 0 that feel at or below 0°C — the comfort signal a plain temperature reading hides.

Days feeling ≥ 32°C
31
heat index over the day's high
Days feeling ≤ C
0
wind chill below the day's low

The story in October is heat — humidity pushes the afternoon "feels like" well above the raw temperature.

Caicó weather by month

How October compares with the rest of the year at a glance. October is the 3rd-warmest and 10th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan35° / 24°59712.32.6
Feb35° / 24°568.412.22.6
Mar34° / 24°10111.8122.7
Apr34° / 24°6710.311.93.1
May33° / 23°305.511.73.6
Jun32° / 22°193.411.64.4
Jul32° / 21°12211.74.6
Aug33° / 21°50.411.84.3
Sep35° / 22°10.1123.4
Oct36° / 23°40.312.12.7
Nov36° / 23°10.212.32.5
Dec36° / 24°111.912.42.5

Cloud cover in October

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 65% of the time in October.

Beyond those clear spells, partly cloudy skies cover about 18% of October, with mostly cloudy or overcast conditions the remaining 17%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
1919
2919
3919
48911
58911
68812
78812
88713
98515
108515
118416
128416
138416
148416
158416
168317
178317
188218
198119
208119
218119
228020
238020
248020
257921
267921
277921
287921
297921
307921
317921

Chance of precipitation in October

Any precipitation

Caicó gets around 4 mm of rain over 0.3 wet days in October. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 1% and peaks near 2% on the wettest days.

0%10%20%30%151015202531
Rain chance (%)
10
20
30
41
51
61
71
81
91
101
111
121
131
141
151
161
171
181
191
201
211
222
232
242
252
262
272
282
292
301
311

Humidity in October

DryComfortableHumidMuggyOppressiveMiserable

Most of October feels humid — the stacked bands show each day's mix of comfort levels, read off the dew point.

By dew point, October lands in the humid band about 74% of days. Sticky, muggy-or-worse air turns up on roughly 18% of them.

0%25%50%75%100%151015202531
Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
11080100
21080100
31079110
41079110
51079110
61078120
71078120
8979120
9978130
10978130
11977140
12977140
13877150
14876160
15876160
16875170
17775180
18774190
19774190
20772201
21771211
22671221
23670231
24670231
25570241
26569251
27569251
28569251
29568261
30470260
31470260

Wind in October

Winds average 18 km/h in October.

Across October, daily wind ranges from about 18 km/h on the calmest days to 19 km/h at its breeziest. It stays fairly steady from day to day.

0510152025151015202531
Wind speed (km/h)Feels
119light breeze
219light breeze
319light breeze
419light breeze
519light breeze
619light breeze
719light breeze
819light breeze
919light breeze
1019light breeze
1119light breeze
1219light breeze
1319light breeze
1419light breeze
1519light breeze
1619light breeze
1718light breeze
1818light breeze
1918light breeze
2018light breeze
2118light breeze
2218light breeze
2318light breeze
2418light breeze
2518light breeze
2618light breeze
2718light breeze
2818light breeze
2918light breeze
3018light breeze
3118light breeze

Sunrise & sunset in October

DaylightNight

Daylight runs from about 12 h 06 min at the start of October to 12 h 12 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 6 minutes over October. Sunrise moves from 5:16 AM to 5:05 AM, and sunset from 5:19 PM to 5:19 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
112.15:165:19
212.15:155:19
312.15:155:19
412.15:145:19
512.15:145:19
612.15:135:18
712.15:135:18
812.15:125:18
912.15:125:18
1012.15:115:18
1112.15:115:18
1212.15:115:18
1312.15:105:18
1412.15:105:18
1512.15:095:18
1612.15:095:18
1712.25:095:18
1812.25:085:18
1912.25:085:18
2012.25:085:18
2112.25:075:18
2212.25:075:18
2312.25:075:18
2412.25:075:18
2512.25:065:18
2612.25:065:18
2712.25:065:18
2812.25:065:18
2912.25:055:18
3012.25:055:19
3112.25:055:19

Solar energy in October

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in October, about 7.09 kWh/m² — the sunniest month for solar.

For context, solar energy here swings from a low near 4.72 kWh/m² to a high of 7.09 kWh/m² in October across the year — October's 7.09 kWh/m² sits near the top of that range.

02468151015202531
Solar energy (kWh/m²)Level
17.1Intense
27.1Intense
37.1Intense
47.1Intense
57.1Intense
67.1Intense
77.1Intense
87.1Intense
97.1Intense
107.1Intense
117.1Intense
127.1Intense
137.1Intense
147.1Intense
157.1Intense
167.1Intense
177.1Intense
187.1Intense
197.1Intense
207.1Intense
217.1Intense
227.1Intense
237.1Intense
247.1Intense
257.1Intense
267.1Intense
277.1Intense
287.1Intense
297.1Intense
307.1Intense
317.1Intense
Planning a trip in October

Is October a good time to visit Caicó?

Our two travel scores rate October for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).

2.7
Sightseeing
7th-best month of the year
6.4
Beach & pool
6th-best month of the year

October is a weaker month for outdoor sightseeing in Caicó. The water and warmth also suit a beach or pool day.

What to pack for Caicó in October

From October's temperature range, rain chance, sun and wind — what's worth putting in the bag.

In October, Caicó sees daytime highs around 36°C and nights near 23°C. Pack light clothes and sun protection.

light clothessun protection

UV index in Caicó in October

LowModerateHighVery highExtreme

Clear-sky midday UV in October peaks around 12 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Caicó peaks around March 13 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near July 17 at about 10 (very high).

The index reaches 3 or more — the level where the WHO recommends sun protection — every month of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highExtremeMar 13UV 15Jul 17UV 10
UV index (midday)Level
Jan13Extreme
Feb15Extreme
Mar15Extreme
Apr14Extreme
May11Extreme
Jun10Very high
Jul10Very high
Aug10Very high
Sep12Extreme
Oct12Extreme
Nov12Extreme
Dec12Extreme

Air quality in Caicó in October

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where October falls, not just the annual average.

Air quality in Caicó is worst in October — around 21 µg/m³ PM2.5 (moderate), about 4.0× the cleanest month (July, 5 µg/m³).

Modeled monthly averages (CAMS reanalysis, 2015–2024).

0102030JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateOct 1421 µg/m³Jul 95 µg/m³
PM2.5 (µg/m³)Level
Jan12Moderate
Feb9Good
Mar8Good
Apr8Good
May7Good
Jun6Good
Jul5Good
Aug13Moderate
Sep20Moderate
Oct21Moderate
Nov19Moderate
Dec16Moderate
Location & terrain

Where is Caicó?

Caicó sits at 6.5°S, 37.1°W, 161 m above sea level, in Brazil. The nearest listed city is Jucurutu, 48 km away.

Topography around Caicó

How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Caicó.

Within 3 km, the terrain around Caicó has only modest variations in elevation — a maximum elevation change of 54 m around an average of 162 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 499 m; within 80 km, large variations in elevation — a maximum elevation change of 867 m.

The land around Caicó is covered by shrubs (36%), grassland (31%) and artificial surfaces (27%) within 3 km, shrubs (69%) and grassland (26%) within 16 km, and shrubs (77%) within 80 km.

3 km
54 m
16 km
499 m
80 km
867 m
treesshrubsgrasslandcroplandartificial surfaceswater
October weather nearby: Jucurutu 48 km · Parelhas 55 km · Patos 66 km · Currais Novos 68 km · Catolé do Rocha 73 km · São Bento 75 km · Lagoa Nova 80 km · Picuí 83 km

Brazil travel facts

Travel advisory
Level 2
Exercise Increased Caution
Power plugs
Type C / N
127 / 220 V · 60 Hz
Prices
≈ 46% of US
price level, 2025
GDP per capita
$10,713
2025
Happiness
6.6 / 10
World Happiness, 2025
Safe drinking water
89%
of population, 2024
Homicide rate
19.3
per 100k, 2023
Road deaths
16
per 100k/yr, 2019
Income group
Upper middle
World Bank
English
Low
EF EPI 482
Religion
Roman Catholic 57%Evangelical 27%none 9%other 4%

Sources: World Bank, US State Department, World Happiness Report, WHO/UNICEF, EF EPI, CIA World Factbook.

Data sources

Temperature, precipitation, cloud, humidity, wind and solar figures are a 1991–2020 climatology for Caicó (-6.4583°, -37.0978°, elevation 161 m), computed from hourly ERA5 reanalysis — contains modified Copernicus Climate Change Service information. Sun figures are astronomical calculations, not observations. City data © GeoNames, CC BY 4.0. Map outlines from Natural Earth (public domain); interactive map © Google. UV index is derived from CAMS (Copernicus Atmosphere Monitoring Service) clear-sky UV data — contains modified Copernicus Atmosphere Monitoring Service information. Monthly air-quality (PM2.5) seasonality is from the CAMS EAC4 reanalysis (Copernicus Atmosphere Monitoring Service), scaled to the WHO annual mean where available. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).